Simple Bukkit Plugin - Opening A Chest - minecraft

Question

Server owner had asked me to write a simple plugin for the server. All it requires is that if you click on a bookshelf with a written book in hand, it will open a chest. When the person closes that chest, all the books placed in it are destroyed.
I understand the basics of bukkit plugin developing, but the instructions on their website are quite complicated. I understand that I would have to register that the players item in hand is indeed a book with this code:
Player player = event.getPlayer();
if (player.getItemInHand().getType() == Material.WRITTEN_BOOK) {
// Do other stuff in here
}
However, if it would be easier for the plugin to be a button that is pressed and the book in hand is destroyed, would you please let me know and help me go about those steps.

Answer 1

You could listen to PlayerInteractEvent, check if they right-click a bookshelf, then open a chest GUI... You could do it like this:
#EventHandler //ALWAYS use this before events
public void playerInteract(PlayerInteractEvent e){ //listen for PlayerInteractEvent
if(e.getAction().equals(Action.RIGHT_CLICK_BLOCK){ //make sure the player right-clicked a block
if(e.getClickedBlock().getType().equals(Material.BOOKSHELF)){ //make sure the player right-clicked a bookshelf
Player p = e.getPlayer(); //get the player
if(p.getItemInHand() != null){ //make sure the player has something in their hand
if(p.getItemInHand().getType().equals(Material.WRITTEN_BOOK)){ //check if the player has a written book in their inventory
//Inventory inv = Bukkit.createInventory(null, <size (should be divisible by 9)>, "name"); //create the inventory
//An example of creating the inventory would be:
Inventory inv = Bukkit.createInventory(null, 36, "Disposal");
}
}
}
}
}
That should be all that you need to do. Just make sure that you register events in your onEnable() method using:
this.getServer().getPluginManager().registerEvents(new HandlerClassName(), this);
and make sure that the handler class implements Listener.
Pretty much, what the first code above is doing, is:
Listen for PlayerInteractEvent
Make sure that the player involved with the interact event Right Clicked a block
Make sure that the right-clicked block was a Book Shelf
Make sure that the item in the player's hand is not null
Make sure that the item in the player's hand is a Written Book
Create a new inventory named Disposal with 36 slots, or a 9 x 4 chest.
Then, when the player puts items in the chest, and closes it, the items will be destroyed!
If you would like it to just remove the book when the user right-clicks a chest, simply use:
p.setItemInHand(new ItemStack(Material.AIR));
Instead of this:
Inventory inv = Bukkit.createInventory(null, 36, "Disposal");